Dr. H. Wayne Carver II tells The Hartford Courant that he wants to know if there is any identifiable disease associated with the behavior of the shooter, Adam Lanza. He is working with the University of Connecticut department of genetics.

Family friends Mark and Louise Tambascio told CBS Evening News anchor Scott Pelley on last Sunday's 60 Minutes that Adam's mother, Nancy Lanza, had told them that her son suffered from Asperger's syndrome, and it was a full-time obligation to take care of him.

Paula Levy, a mediator who worked with Lanza's parents during their divorce, also said Lanza was diagnosed with the autism spectrum disorder.

Carver however says Asperger's is not associated with violent behavior, a point many experts and advocates have been raising in light of the reports of Lanza's condition. He says he's not considering Asperger's as a reason for Lanza's rampage on Friday.